问答题

The outside resources of contamination in SSIS (Surgical Site Infections) include ( ) .

A、Patients’ own normal flora
B、surgical personnel
C、surgical instruments
D、air
此题为多项选择题。

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When you cancel your appointment, remember . ()

A. to talk politely
B. to be sincerely
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D. to feel sorry
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A、shameB、convictionC、rumorD、scandal